Today I got an error when selecting the “VMware EVC” option in the Cluster Settings at my vCenter 4.0 host with multiple HP Blades with same CPU. Error message:
Method not found: ‘Vmomi.HostSystemArray EVCState.get_BadSoftwareHostsBlockingEVC()’

Solution:
This issue occurs when a system installed with vSphere 4.1 and you use vSphere 4.0 Client on that system to access vCenter Server 4.0.
To workaround this issue, install a vSphere 4.0 Client on a system on which you have not installed vSphere4.1 Client earlier and then update the EVC cluster using the vSphere 4.0 Client.
Source: VMware
Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.
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Today I got some trouble with my Exchange production VM, my VMware Data Recovery 1.2 created many snapshots.. and removed the VM from the vCenter inventory… ok not a big issue, but on the datastore I can’t Add it to the inventory again, the option “Add to Inventory” is greyed out.

Solution:
On the console I added the VM again in vCenter with the vmware-cmd option:

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Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.
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Last week we upgraded VMware Data Recovery from version 1.1 to 1.2. After rerun the backup schedule I received this error:
Failed to create snapshot for <server>. error –3948 ( vcb api exeption)
My backup starts > Create a new snapshot > Few seconds later… the snapshot is removed and get this warning..

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Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.
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Today I got some problems with backing up one of my VM’s using VMware Data Recovery. I was looking what was going wrong after a few failures.. And yes.. hanging snapshots
Trying to remove the snapshots was a little bit different. When I went into the “Snapshot Manager” there were no active snapshots and I couldn’t delete the files. But while browsing the Datastore I saw many active snapshots.
Current situation:

– You can “Revert to Current Snapshot” via menu..

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Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.
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Today tried to import the ESX Deployment Appliance (EDA) in vCenter 4, but after File > Deploy OVF template > selecting destination host I received this error message:
Device ‘VirtualCdrom’ uses a controller that is not supported. This is a general limitation to the virtual machine’s virtual hardware version on the selected host
To modify the VMware Hardware Version from default version 7 to 4 you can use the VMware vCenter Converter Standalone 4.0.1 Now I was able to import the EDA Appliance in my vCenter.

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.
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After some problems with my ESX 4.0 host I want to move some critical VM’s to my ESX 3.5 u4 host.. but my upgraded hardware level (7) is not compatible with my ESX 3.5 u5 host. The following is a step-by-step guide on how to perform this downgrade:
I want to downgrade my Windows 2008 64-bit with XenApp 6 with hardware level 7 to hardware level 4.
Time to downgrade:
Download and start: VMware vCenter Converter Standalone 4.0.1

– Click: Convert Machine
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Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.
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After upgrading the VMware ESX 4.0 host with VMware Update Manager I received in the boot loader a few errors:
fsc.ext3: Unable to resolve ‘UUID=xxxxx-xxxx-xxxx-xxxxxxxxxxxx’
*** An error occurred during the file system check.
*** Dropping you to a shell; the system will reboot
*** when you leave the shell.
To resolve this issue:

– Login with Root credentials
Error warnings:
fsck.ext3: Unable to resolve ‘UUID=7d6111a3-d848-4e18-88e3-46a66912f8e6’
fsck.ext3: Unable to resolve ‘UUID=b07fd5a0-4a19-445d-adae-3b3679b5be3b’
fsck.ext3: Unable to resolve ‘UUID=b2ac1406-2dc1-4d4a-8649-0072389978ab’
Edit file /var/fstab/ by using VI of NANO
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Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.
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After rebooting my vCenter server I can’t connect my vCenter 4.0, error:
Windows could not start the VMware VirtualCenter Service on Local Computer. For more information, review the System Event Log. If this is a non-Microsoft service, contact the service vendor, and refer to service-specific error code 2.
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Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.
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